Cannot access class com.sun.javafx.util.Utils (in module javafx.graphics) - JavaFX & Eclipse

Question

I have follow this guide to setup JavaFX onto a Linux machine. First I have installed Java 11

asus@asus-pc:/usr/share/openjfx/lib$ java -version
openjdk version "11.0.3" 2019-04-16
OpenJDK Runtime Environment (build 11.0.3+7-Ubuntu-1ubuntu219.04.1)
OpenJDK 64-Bit Server VM (build 11.0.3+7-Ubuntu-1ubuntu219.04.1, mixed
mode, sharing)
asus@asus-pc:/usr/share/openjfx/lib$ 

Then I have installed OpenJFX from the command sudo apt-get install openjfx

 asus@asus-pc:/usr/share/openjfx/lib$ ls
 javafx.base.jar      javafx.graphics.jar  javafx.swing.jar
 javafx.controls.jar  javafx.media.jar     javafx.web.jar
 javafx.fxml.jar      javafx.properties    src.zip
 asus@asus-pc:/usr/share/openjfx/lib$ 

Then have created a library in Eclipse.

Then I have include it into my java project. I try to run this code:

package se.danielmartensson.start;

import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;

public class Main extends Application{

    /*
     * Start the start(Stage front)
     */
    public static void main(String[] args) {
        launch();
    }

    @Override
    public void start(Stage front) throws Exception {
        Parent root = FXMLLoader.load(getClass().getResource("/JUSBPlotter/src/se/danielmartensson/fxml/front.fxml"));
        Scene scene = new Scene(root);
        front.setScene(scene);
        front.setTitle("Fracken");
        front.show();
    }

}

And I have change the run configurations to:

But when I compile the code. I get this errors:

Exception in Application start method
java.lang.reflect.InvocationTargetException
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:566)
    at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:464)
    at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:363)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:566)
    at java.base/sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:1051)
Caused by: java.lang.RuntimeException: Exception in Application start method
    at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:900)
    at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication$2(LauncherImpl.java:195)
    at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: java.lang.IllegalAccessError: class com.sun.javafx.fxml.FXMLLoaderHelper (in unnamed module @0x1ff6d2c7) cannot access class com.sun.javafx.util.Utils (in module javafx.graphics) because module javafx.graphics does not export com.sun.javafx.util to unnamed module @0x1ff6d2c7
    at com.sun.javafx.fxml.FXMLLoaderHelper.<clinit>(FXMLLoaderHelper.java:38)
    at javafx.fxml.FXMLLoader.<clinit>(FXMLLoader.java:2056)
    at se.danielmartensson.start.Main.start(Main.java:20)
    at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$9(LauncherImpl.java:846)
    at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runAndWait$12(PlatformImpl.java:455)
    at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$10(PlatformImpl.java:428)
    at java.base/java.security.AccessController.doPrivileged(Native Method)
    at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$11(PlatformImpl.java:427)
    at javafx.graphics/com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:96)
    at javafx.graphics/com.sun.glass.ui.gtk.GtkApplication._runLoop(Native Method)
    at javafx.graphics/com.sun.glass.ui.gtk.GtkApplication.lambda$runLoop$11(GtkApplication.java:277)
    ... 1 more
Exception running application se.danielmartensson.start.Main

Question:

Is there anyone where who know how to solve this error? I have setup JavaFX before, but this time, it won't work for me.

Edit 1: If I change the run configurations to:

--module-path="/usr/share/openjfx/lib" --add-modules=javafx.controls,javafx.fxml

I get this errors

Answer 1

Having the same issue with IntelliJ IDEA 2020.1 with JDK 14.

Finally resolved by adding a module-info.java like this one under src/main/java if you use maven:

module sample {
    requires javafx.controls;
    requires javafx.graphics;

    opens sample;
}

Answer 2

thanks, works for me as follows

public void start(Stage primaryStage) throws Exception{
        Parent root = FXMLLoader.load(getClass().getResource("sample.fxml"));

module-info.java:

module sample {
    requires javafx.controls;
    requires javafx.graphics;
    requires javafx.fxml;
    opens sample ;
}